<!DOCTYPE html>
<!--
Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
Click nbfs://nbhost/SystemFileSystem/Templates/Scripting/EmptyPHPWebPage.php to edit this template
-->
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
    </head>
    <body>
        
        <form action="demo003.php" method="GET">
            初始高度:<select name="h">
                 <?php
                 for($index=1;$index<1000;$index++){
                     echo "<option value=\"${index}\">${index}</option>"; }
                 ?>
            </select><br/>
            圆环数量:
            <select name="c">
                 <?php
                 for($index=1;$index<1000;$index++){
                     echo "<option value=\"${index}\">${index}</option>";}?>
           </select><br/>
            步 长:
            <select name="s">
                 <?php
                 for($index=1;$index<1000;$index++){
                     echo "<option value=\"${index}\">${index}</option>";}?>
             </select><br/>
            <input type="submit" value="提交">
            <input type="reset" value="取消"/>
            
        </form>
        <?php
        // put your code here
        ?>
    </body>
</html>
